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<p>[QUOTE=&quot;hotwheelsearl, post: 6501899, member: 75143&quot;]Happy to share!</p><p><br /></p><p>I do not understand any of the chemistry, but in my experience, it&#039;s a rather color-coded system that works for me.</p><p><br /></p><p>Bronze and silver</p><p>Green, Black, Brown, Sand = sodium hydroxide</p><p>Blue = acetic acid</p><p>Rust = sodium thiosulfate</p><p>-- for silver, black horn silver is also removed by thiosulfate</p><p><br /></p><p>In general, rock-like mineral encrustations slough right off with hydroxide. Vinegar and thiosulfate don&#039;t do much at all for those.</p><p>Basically, for mineral encrustations that you COULD, but DONT WANT TO mechanically clean, hydroxide speeds up the process a thousand fold.</p><p><br /></p><p>As for dilutions and times - I&#039;m not very scientific. I throw some powder/crystals in a jar and leave it overnight. If it&#039;s not enough, I&#039;ll do another night.[/QUOTE]</p><p><br /></p>

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